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- package swarm
- import (
- "fmt"
- "time"
- "golang.org/x/net/context"
- "github.com/docker/docker/api/client"
- "github.com/docker/docker/cli"
- "github.com/docker/engine-api/types/swarm"
- "github.com/spf13/cobra"
- "github.com/spf13/pflag"
- )
- type updateOptions struct {
- autoAccept AutoAcceptOption
- secret string
- taskHistoryLimit int64
- dispatcherHeartbeat time.Duration
- nodeCertExpiry time.Duration
- }
- func newUpdateCommand(dockerCli *client.DockerCli) *cobra.Command {
- opts := updateOptions{autoAccept: NewAutoAcceptOption()}
- var flags *pflag.FlagSet
- cmd := &cobra.Command{
- Use: "update",
- Short: "Update the Swarm",
- Args: cli.NoArgs,
- RunE: func(cmd *cobra.Command, args []string) error {
- return runUpdate(dockerCli, flags, opts)
- },
- }
- flags = cmd.Flags()
- flags.Var(&opts.autoAccept, "auto-accept", "Auto acceptance policy (worker, manager or none)")
- flags.StringVar(&opts.secret, "secret", "", "Set secret value needed to accept nodes into cluster")
- flags.Int64Var(&opts.taskHistoryLimit, "task-history-limit", 10, "Task history retention limit")
- flags.DurationVar(&opts.dispatcherHeartbeat, "dispatcher-heartbeat", time.Duration(5*time.Second), "Dispatcher heartbeat period")
- flags.DurationVar(&opts.nodeCertExpiry, "cert-expiry", time.Duration(90*24*time.Hour), "Validity period for node certificates")
- return cmd
- }
- func runUpdate(dockerCli *client.DockerCli, flags *pflag.FlagSet, opts updateOptions) error {
- client := dockerCli.Client()
- ctx := context.Background()
- swarm, err := client.SwarmInspect(ctx)
- if err != nil {
- return err
- }
- err = mergeSwarm(&swarm, flags)
- if err != nil {
- return err
- }
- err = client.SwarmUpdate(ctx, swarm.Version, swarm.Spec)
- if err != nil {
- return err
- }
- fmt.Println("Swarm updated.")
- return nil
- }
- func mergeSwarm(swarm *swarm.Swarm, flags *pflag.FlagSet) error {
- spec := &swarm.Spec
- if flags.Changed("auto-accept") {
- value := flags.Lookup("auto-accept").Value.(*AutoAcceptOption)
- spec.AcceptancePolicy.Policies = value.Policies(nil)
- }
- var psecret *string
- if flags.Changed("secret") {
- secret, _ := flags.GetString("secret")
- psecret = &secret
- }
- for i := range spec.AcceptancePolicy.Policies {
- spec.AcceptancePolicy.Policies[i].Secret = psecret
- }
- if flags.Changed("task-history-limit") {
- spec.Orchestration.TaskHistoryRetentionLimit, _ = flags.GetInt64("task-history-limit")
- }
- if flags.Changed("dispatcher-heartbeat") {
- if v, err := flags.GetDuration("dispatcher-heartbeat"); err == nil {
- spec.Dispatcher.HeartbeatPeriod = uint64(v.Nanoseconds())
- }
- }
- if flags.Changed("cert-expiry") {
- if v, err := flags.GetDuration("cert-expiry"); err == nil {
- spec.CAConfig.NodeCertExpiry = v
- }
- }
- return nil
- }
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